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US 8,570,886 B2Granted
Communication system, mobile station, base station, response decision method, resource configuration decision method, and program
AssigneeNEC Corporation
InventorsHiroaki Aminaka, Jinsock Lee
Life of this patent
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Abstract
It is possible to solve the problem that a downstream control information amount is significantly increased if allocation information is periodically reported because no allocation method of a default E-DCH resource configuration is defined for a preamble signature. A base station and a mobile station decide a default resource configuration by using a total number of resource configurations or a value obtained from the total number.
Claims32
A communication system including at least one mobile station, said communication system further comprising:
- a base station which receives a preamble transmitted by said at least one mobile station, and transmits a response to the received preamble to said at least one mobile station, and
- in case that said response is a first response, said at least one mobile station performs a signal transmission using a resource corresponding to an index determined by a default resource configuration index (Dind) and at least a value obtained from a first signature included in a signal transmitted from said base station,
- wherein said default resource configuration index Dind is represented as Dind=PreInd mod Y, wherein Y represents a total number of resources, and PreInd represents a preamble signature number for identifying a second signature used for said preamble.
A communication system comprised of a base station and mobile stations,
- wherein said base station receives a preamble transmitted by said mobile station, and transmits a response to the received preamble to said mobile station, and in a case that said response is a first response, said mobile station transmits data using information about at least a part of a default resource configuration of the own mobile station that is determined using a total number of resource configurations or a value obtained from said total number,
- wherein said mobile station determines said default resource configuration for use in said transmission further using a value obtained from a preamble signature number for identifying a preamble signature for use in said preamble, and
- wherein said mobile station calculates said default resource configuration Dind for use in said transmission as Dind=PreInd mod Y, where said preamble signature number is designated as PreInd, and the total number of resource configurations or a value obtained from said total number is designated as Y.
A communication system comprised of a base station and mobile stations,
- wherein said base station receives a preamble transmitted by said mobile station, and transmits a response to the received preamble to said mobile station, and in a case that said response is a first response, said mobile station transmits data using information about at least a part of a default resource configuration of the own mobile station that is determined using a total number of resource configurations or a value obtained from said total number,
- wherein said base station prepares a plurality of said default resource configurations for each said preamble signature,
- wherein said base station prepares a plurality of values of a parameter for calculating said default resource configuration, selects a value of said parameter, and broadcasts it, and
- wherein said parameter is comprised of a positional offset and a spacing offset, and said base station calculates a default resource configuration Dind for each group as Dind=(Cj×PreInd+Bi) mod Y, where the positional offset is designated as Bi (i=1, . . . , N;
- N is a natural number), and the spacing offset is designated as Cj (j=1, . . . , L;
- L is a natural number).
3 more elements
A communication system comprised of a base station and mobile stations,
- wherein said base station receives a preamble transmitted by said mobile station, and transmits a response to the received preamble to said mobile station, and in a case that said response is a first response, said mobile station transmits data using information about at least a part of a default resource configuration of the own mobile station that is determined using a total number of resource configurations or a value obtained from said total number,
- wherein said base station prepares a plurality of said default resource configurations for each said preamble signature,
- wherein said base station prepares a plurality of values of a parameter for calculating said default resource configuration, selects a value of said parameter, and broadcasts it, and
- wherein in a case that a predetermined condition is satisfied, said base station modifies said parameter to another value, and
- wherein said predetermined condition is based on a utilization rate obtained from the number of default resource configurations that can be determined from the value of said parameter and the number of busy ones among them.
2 more elements
A base station which receives a preamble from a mobile station and transmits a response to said preamble to said mobile station,
- wherein, in case that said response is a first response, said mobile station performs a signal transmission by using a resource corresponding to an index determined by a default resource configuration index (Dind) and at least a value obtained from a first signature included in a signal transmitted from said base station, and
- wherein said default resource configuration index Dind is represented as Dind=PreInd mod Y, wherein Y represents a total number of resources, and PreInd represents a preamble signature number for identifying a second signature used for said preamble.
A base station that determines a responsive notification in response to a preamble transmitted by a mobile station based on a default resource configuration determined using a total number of resource configurations or a value obtained from said total number,
- wherein said base station determines said default resource configuration for use in said determination of the responsive notification further using a value obtained from a preamble signature number for identifying a preamble signature for use in said preamble, and
- wherein said base station calculates said default resource configuration Dind for use in said determination of a response as Dind=PreInd mod Y, where said preamble signature number is designated as PreInd, and the total number of resource configurations or a value obtained from said total number is designated as Y.
A mobile station, for transmitting a preamble to a base station, which receives a response to said preamble from said base station, and
- in case that said response is a first response, said mobile station performs a signal transmission by using a resource corresponding to an index determined by a default resource configuration index (Dind) and at least a value obtained from a second signature included in a signal transmitted from said base station,
- wherein said default resource configuration index Dind is represented as Dind=PreInd mod Y, wherein Y represents a total number of resources, and PreInd represents a preamble sing signature number for identifying a first signature used for said preamble.
A mobile station for transmitting a preamble to a base station, wherein said mobile station receives a response to said preamble from said base station, and
- in a case that said response is a first response, said mobile station transmits data using information about at least a part of a resource configuration that is determined as a default resource configuration of the own mobile station using a total number of resource configurations or a value obtained from said total number,
- wherein said mobile station determines said default resource configuration for use in said transmission further using a value obtained from a preamble signature number for identifying a preamble signature for use in said preamble, and
- wherein said mobile station calculates said default resource configuration Dind for use in said transmission as Dind=PreInd mod Y, where said preamble signature number is designated as PreInd, and the total number of resource configurations or a value obtained from said total number is designated as Y.
A response determination method for a base station, comprising:
- receiving a preamble from a mobile station, and transmitting a response to said preamble to said mobile station,
- in case that said response is a first response, performing, at said mobile station, a signal transmission by using a resource corresponding to an index determined by a default resource configuration index (Dind) and at least a value obtained from a first signature included in a signal transmitted from said base station,
- wherein said default resource configuration index Dind is represented as Dind=PreInd mod Y, wherein Y represents a total number of resources, and PreInd represents a preamble signature number for identifying a second signature used for said preamble.
A response determination method for a base station, comprising:
- determining a responsive notification in response to a preamble transmitted by a mobile station based on a default resource configuration determined using a total number of resource configurations or a value obtained from said total number,
- determining said default resource configuration for use in said determination of a responsive notification further using a value obtained from a preamble signature number for identifying a preamble signature for use in said preamble, and
- calculating said default resource configuration Dind for use in said determination of a response as Dind=PreInd mod Y, where said preamble signature number is designated as PreInd, and the total number of resource configurations or a value obtained from said total number is designated as Y.
A resource configuration determination method for a mobile station, comprising:
- receiving a response to a preamble from a base station, and
- in case that said response is a first response, performing a signal transmission by using a resource corresponding to an index determined by a default resource configuration index (Dind) and at least a value obtained from a second signature included in a signal transmitted from said base station,
- wherein said default resource configuration index Dind is represented as Dind=PreInd mod Y, wherein Y represents a total number of resources, and PreInd represents a preamble signature number for identifying a first signature used for said preamble.
Dependencies are inferred from the claim text.